Zach and I just got back from Oahu. While there, we walked about a mile to get from our hotel to our favorite beach spot. The quickest way was to walk along the beach but at some points the water line was right up against a hotel and so part of the way we had to walk along a pretty narrow sidewalk (pictured here).
We walked with tubes and so it was a little awkward to traverse, and in some places it jams up with people cuz a giant turtle appears in the water below - anyway it's mostly single file. One day I was ahead of Zach in the single file walking, and we are in love, so I lowered my pants enough to give him the half moon treatment.
When I turned around to laugh about it with him, he wasn't there. He's so sweet he let a tiny little demure Japanese woman and her husband pass him.